"minifyEnabled true" 给我问题，为什么？

Question

当我在我的任何变体（调试或发布）中将 minifiyEnabled 设置为 true 时，它给我以下错误 -

Warning:retrofit.appengine.UrlFetchClient: can't find referenced class com.google.appengine.api.urlfetch.HTTPRequest
Warning:retrofit.appengine.UrlFetchClient: can't find referenced class com.google.appengine.api.urlfetch.HTTPHeader
Warning:library class android.webkit.WebView depends on program class android.net.http.SslCertificate
Warning:library class android.webkit.WebViewClient depends on program class android.net.http.SslError
Warning:library class org.apache.http.conn.ssl.SSLSocketFactory depends on program class org.apache.http.conn.scheme.HostNameResolver
Warning:library class org.apache.http.conn.ssl.SSLSocketFactory depends on program class org.apache.http.params.HttpParams
Warning:library class org.apache.http.params.HttpConnectionParams depends on program class org.apache.http.params.HttpParams
Warning:there were 176 unresolved references to classes or interfaces.
Warning:there were 23 instances of library classes depending on program classes.
Warning:there were 6 unresolved references to program class members.
Warning:Exception while processing task java.io.IOException: Please correct the above warnings first.
Error:Execution failed for task ':app:transformClassesAndResourcesWithProguardForProductionDebug'.
> Job failed, see logs for details

如果是 lolipop 或更高版本，它在模拟器或设备中工作正常。

如果我禁用或将 minifyEnabled 设置为 false，我的问题就解决了，但我真的不想这样。

我的 gradle 工具是 build:gradle:2.3.0'

和multiDexEnabled true

注意 - 我没有在我的 proguard-rules.pro 文件中保留任何 class 或属性。

Answer 1

尝试将以下行添加到您的混淆器配置中：

# Platform calls Class.forName on types which do not exist on Android to determine platform.
-dontnote retrofit2.Platform
# Platform used when running on Java 8 VMs. Will not be used at runtime.
-dontwarn retrofit2.Platform$Java8
# Retain generic type information for use by reflection by converters and adapters.
-keepattributes Signature
# Retain declared checked exceptions for use by a Proxy instance.
-keepattributes Exceptions

用于改造库。对于其他外部库，您可以将此方法与您想要忽略的自己的包一起使用；

-dontwarn org.apache.** - 例如

有关 ProGuard 用法的更多信息，您可以找到 here

Answer 2

经过大量的研究和实验，我找到了解决方案。我们必须在 proguard-rules.pro 文件中添加 keep 和 dontwarn 语句 -

# Retrofit 1.X
-keep class com.squareup.okhttp.** { *; }
-keep class retrofit.** { *; }
-keep interface com.squareup.okhttp.** { *; }

-dontwarn com.squareup.okhttp.**
-dontwarn okio.**
-dontwarn retrofit.**
-dontwarn rx.**

-keepclasseswithmembers class * {
    @retrofit.http.* <methods>;
}

# If in your rest service interface you use methods with Callback argument.
-keepattributes Exceptions

# If your rest service methods throw custom exceptions, because you've defined an ErrorHandler.
-keepattributes Signature



# Proguard configuration for amazon Jackson 2.x (fasterxml package instead of codehaus package)

-keep class com.amazonaws.** { *; }
-keepnames class com.amazonaws.** { *; }
-dontwarn com.amazonaws.**
-dontwarn com.fasterxml.**


-keep public class com.google.android.gms.* { public *; }
-dontwarn com.google.android.gms.**

-dontwarn org.mockito.**
-dontwarn sun.reflect.**
-dontwarn android.test.**



-dontwarn org.hamcrest.**
-dontwarn android.test.**
-dontwarn android.support.test.**

-keep class org.hamcrest.** {
   *;
}

-keep class org.junit.** { *; }
-dontwarn org.junit.**

-keep class junit.** { *; }
-dontwarn junit.**

-keep class sun.misc.** { *; }
-dontwarn sun.misc.**


-keep public class android.net.http.SslError
-keep public class android.webkit.WebViewClient

-dontwarn android.webkit.WebView
-dontwarn android.net.http.SslError
-dontwarn android.webkit.WebViewClient


-keep class org.apache.http.** { *; }
-dontwarn org.apache.http.**

注意 - 我遵循了消息中的警告，并通过一个一个地挑选相应地放置了我的 proguard 规则。

Answer 3

如果您定义了正确的 proguard 规则并且仍然发布，请 minifyEnabled true 仅用于 application 级别用于其他 module 使用 minifyEnabled false.

此外，如果发现任何 lintError 且无法解决，则使用以下代码

lintOptions {
checkReleaseBuilds false
// Or, if you prefer, you can continue to check for errors in release builds,
// but continue the build even when errors are found:
abortOnError false

}

经过这么多努力，我检查了它及其工作原理。

"minifyEnabled true" 给我问题，为什么？

"minifyEnabled true" gives me issue, why so?

android

proguard